.work-preview-button, .certificate-preview-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 38px;
    padding: 8px 12px;
    border: 1px solid var(--primary-soft-border);
    border-radius: 6px;
    background: var(--primary-soft);
    color: var(--primary-strong);
    font: 600 14px var(--font-secondary);
    cursor: pointer;
}

.certificate-preview-button {
    margin-left: 18px;
}

.portfolio-preview {
    width: min(1100px, calc(100% - 32px));
    height: min(760px, calc(100dvh - 24px));
    max-height: none;
    margin: auto;
    padding: 0;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    box-shadow: 0 30px 90px rgba(18, 38, 65, 0.24);
    overflow: hidden;
    cursor: auto;
    grid-template-rows: auto minmax(0, 1fr);
}

.portfolio-preview[open] {
    display: grid;
}

body.light-theme.portfolio-preview-open {
    cursor: auto !important;
}

.portfolio-preview :is(button, a) {
    cursor: pointer;
}

.portfolio-preview iframe {
    cursor: auto;
}

.portfolio-preview::backdrop {
    background: rgba(20, 32, 50, 0.52);
    backdrop-filter: blur(5px);
}

.preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 24px;
    border-bottom: 1px solid var(--glass-border);
}

.preview-header h2 {
    font: 700 19px/1.4 var(--font-primary);
    overflow-wrap: anywhere;
}

.preview-close {
    display: grid;
    place-items: center;
    flex-shrink: 0;
    width: 38px;
    height: 38px;
    border: 1px solid var(--glass-border);
    background: var(--bg-secondary);
    border-radius: 6px;
    color: var(--text-primary);
    cursor: pointer;
}

.preview-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(270px, 320px);
    min-height: 0;
    overflow: hidden;
}

.preview-media {
    position: relative;
    min-width: 0;
    min-height: 0;
    overflow: hidden;
    background: var(--bg-primary);
}

.portfolio-preview.preview-certificate:not(.preview-live) .preview-media {
    display: none;
}

.preview-image, .preview-frame {
    position: absolute;
    inset: 0;
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    border: 0;
}

.preview-frame {
    transform-origin: top left;
}

.portfolio-preview.preview-loading .preview-frame {
    visibility: hidden;
    pointer-events: none;
}

.portfolio-preview [hidden] {
    display: none !important;
}

.preview-sidebar {
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
    overflow-y: auto;
    border-left: 1px solid var(--glass-border);
    background: var(--bg-secondary);
}

.preview-details {
    padding: 22px 22px 10px;
}

.preview-description {
    font-size: 15px;
    line-height: 1.7;
}

.preview-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
    list-style: none;
    margin-block: 12px;
    font-size: 13px;
    color: var(--accent-color);
}

.preview-status {
    font-size: 13px;
    color: var(--text-secondary);
}

.preview-toolbar {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: auto;
    padding: 16px 22px 22px;
    border-top: 1px solid var(--glass-border);
}

.preview-load {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    min-height: 42px;
    color: white;
    background: var(--button-gradient);
    border: 1px solid var(--primary-color);
    border-radius: 6px;
    font: 600 14px var(--font-secondary);
    cursor: pointer;
}

.preview-load:disabled {
    opacity: 0.65;
    cursor: progress;
}

body.light-theme .preview-external {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font: 600 14px var(--font-secondary);
    text-decoration: none;
}

@media (max-width: 600px) {
    .preview-header, .preview-details, .preview-toolbar {
        padding-inline: 16px;
    }

    .preview-header h2 {
        font-size: 16px;
    }

    .certificate-preview-button {
        margin: 8px 0 0;
    }
}

.preview-load[data-preview-state='loading'] {
    color: var(--primary-strong);
    background: var(--primary-soft);
    border-color: var(--primary-soft-border);
}

@media (max-width: 820px) {
    .portfolio-preview {
        width: calc(100% - 16px);
        height: calc(100dvh - 16px);
    }

    .preview-layout {
        grid-template-columns: minmax(0, 1fr);
        grid-template-rows: minmax(260px, 58dvh) auto;
        overflow-y: auto;
    }

    .preview-sidebar {
        overflow: visible;
        border-left: 0;
        border-top: 1px solid var(--glass-border);
    }

    .portfolio-preview.preview-certificate:not(.preview-live) .preview-layout {
        grid-template-rows: auto;
    }
}